One of the biggest misconceptions homeowners have is that the roof surface alone controls moisture. In reality, many winter problems start inside the attic. Warm indoor air rises and meets the cold roof deck. That temperature difference creates condensation. Over time, that moisture leads to mold growth, wet insulation, and wood deterioration.

Proper ventilation allows humid air to escape before it condenses. Adequate insulation keeps warm air from reaching cold surfaces. In the Southeast, balancing airflow correctly is critical, since bringing in humid outdoor air can also create moisture problems if the system isn’t designed properly. This is why material selection should always go hand in hand with a full roof and attic evaluation.